Inking roller



Oct. 4, 1932. H. c. scHRoDER 1,880,361

INKING ROLLER Original Filed March l2. 1928 2 Sheef.s-Shf .cz'cv l g ,l m WW1.

,f 5 ATTORNE Oct. 4, 1932. Q SCHROEDER 1,880,361

INKING ROLLER origina-1 Filed March 12, 1928 2 sheets-sheet 2 Patented oct. 4, 1932L Aunirse stares;

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HANS C. SCHROEDER, OF LA. GRANGE, ILLINOIS, ASSIGNOR T GOSS PRINTING PRESS COIVJIIEANY, A CORPORATION OF ILLINOIS rNKING ROLLER Original application :filed March 12, 1928, Serial No. 260,979. Divided and this application filed January 24, 1930. seriai No. 423,065.

' The invention relates to new and useful improvements in the construction and mounting of inlring `rollers for printing presses, although in certain vof its aspects the invention has wider uses where similar conditions and requirementsexist.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice, with the invention, the same being realized and attained by means Vof the instrumentalities and combinations pointed out in the appended claims.

Theinvention consists in the novel parts, construction, arrangements, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and constituting a part hereof, illustrate one embodiment of the invention, and

together with the description, serve to ex# plain the principles of the invention.

Of the drawings Fig. l is a fragmentary, sectional view showing the invention embodied in a vibrating ink roller; i

Fig. 2 is a full transverse section on -line 2-2 of Fig. 1; Y

Y Fig. 3 is a fragmentary elevation. of a modied form of bearing mechanism; and

, Fig. 4 is an enlarged transverse section on line 4-4 of Fig. 3. y

The invention is directed principallyto providing a construction for vibratable inking rollers of printing presses and the like wherein requisite or desirable relative lightness ofstructure, together with great rigidity and uniformity of structure are required, and exact and uniform surface contact over the ent-ireexterior cylindricalsurface of the roller are essential. u

The operation of distributing and preparing the ink for application to the platesof rotary printing presses, and especially rotary presses wherein a very high class of printing is.requiredtogether with the highest speed consistent with such quality is very difficult and exacting. Modern presses are of great width, and the'inking rollers can be supported only at their ends, and the permissible or possible weight of the rollers is very definitely restricted. It is' therefore vessential to secure a structure having the V'requisite degree of lightness, and which at the same u' time is extremely rigid so that there is nov flexure or variation in the length of the roller,

and especially no tendency towards sagging, even in the central part thereof. That is, the ink distributing and applying action must inkingsurface of the roller.

Vbe exactly uniform over the entire cylindrical In carrying out lthe main purposes of the Y' sible with the amount of material employed, n

and also to provide Vroom for thebearings upon the exterior thereof. f

The invention as embodied, broadly comprises a longitudinally vibratable,'hollow inner supporting member which is medianly of maximum diameter and is diminished out-V wardly ltoward either end, taperingly Vor otherwise. The median portion of this support is within'the cylindrical rotatable roller member, and` anti-friction, nthrust bearings are interposed between the rotatable roller and the inner` portions of thedecreasedends of the support. Thus in the median, unsupported structure the materials are disposed so `as to provide the maximum rigidity and resistance to distortion. In the relatively small ends of the supporting member are mounted pintles, which'provide strong and compact bearings for the entire structure.

VThe foregoing general description, and the following detaileddescription as well,` are illustrative and exemplary of the invention, but arenot restrictive thereof in so far as it is novel.4 Y

The accompanying drawings illustrate, by wav of example, the present -preferred embodiment of the invention, which realizes the advantages described. The central ornondiameter so as to provide the greatest resist- .ance possible against sagging, fleXure or other distortion in the central portion of the relatively long reach of the roller, and with this in view this tubular portion l occupies most of the interior space within theenclosing rotatable tubular roller structure. Toward either end thereof, beginning wi thin the outer, rotatable tubular member, the tubular shaft 1 is tapered gradually decreasingly outwardly, although not necessarily regularly, asY

porting structure two solid pintles or shaft ends 7, which form aftight fit therewithin.

`Each pintle 7 is provided witha projecting shouldered collar 8, which lits snugly against the outer end of the reduced end 6 of the tubular shaft 1. The pintles 7 have cylindrical exterior end portions 9a, which maybe shaped and otherwise adapted for any kind of support desired. The exterior ofthe rotatable roller member 13 is usually covered with a composition or material suitablefor inking, orvsuch other useas the roller may have.

j In the form shown in Figs. 1 and 2 the invention is shown applied to a vibrating inking roller. In this form kthe anti-friction bearings between the tubular supporting core and'the rotatable shell are preferably roller thrustA bearings 31, which may be of any known or other suitable form.v VOne of the Apintles 7 of the tubular support has its cylinvor vibrating the inking roller. comprises a collar 36 fixed on the shaft 9LV by any suitable means. such as a clamping screw 37 threaded into the collar and engaging the shaft. The collar 36 is providedwith an external annular cam groove-38. Into this groove projects a pin 39 fixed @on an arm 4() of a vibrating lever 41, which lever is pivotally mounted at 42, on any suitable part of the machine frame. The lever 4l is rocked inv any known manner through a slight arc of movementV by any known or suitable mechanism. There is thereby imparted a slight ,longitudinal reciprocatorymovement to the shaft 9a and the tubular support 1, and this is imparted bodied form of said means, a pin 43 is fixed in the collarV 36 and projects into a cam groove 44, formed in a curved extension plate 64, which is preferably integral with the supporting member 32. To insure the short rotary reciprocatory i movement, being im: vparted to the shaft 9a and theV support-1, there ispreferably provided a key 45 between the shaft 9a and the vcollar 36. The bearing is preferably a split bearing, and the upper part 46 may be hinged at one side at 47 and have a lock nut 48 at the other side. Thus the roller is readily removable and replaceay ble in its bearings. V

In Figs. 3 and 4 a modified form'of antifriction bearing is provided, wherein the shaft of the roller is not partially rotated during its reciprocatory movement, but reciprocates 'without turning in an anti-friction bearing at either end of the shaft. As embodied, the-lower half 49 of the split bearing is provided with two anti-friction rollers 53 and 54, `iournaled in the half-bearing 49, the rollers being curved to conform to the sha-ft as shown in Fig. 4 and with their axes spaced from and non-parallel to shaft 9a.k Two likeanti-friction rollers 55 and 56 are similarly journaled in the upper hinged half 46 ofthe bearing. AThe four rollers are in contactl with the reciprocable shaft 9a, lbut otherwise the bearing is` out of contact with the` shaft.Y This constitutes an anti-wear bearing which carries the reciprocatory pressure of the shaft. 'A It will he clear, vof course,'that with this bearing, and more especially with the form shown-in Figs. 1 and 2, a partial rotation, either reciprocatory or uni-directional, may be imparted from time to time to the shaft 9, thereby decreasing the resistance to the endwise reciprocatory movement, or vibration, of the roller. -At the same time such a mounting serves also to distribute any possible wear. This is likewise true with respect to the other forms shown. With the mechanism shown in Figs. 1 and 2, if desired, an angular change of position may be'y readily effected by unscrewing and rescrewing the clamping screw 3 7.

' This application is a. division of my prior application Ser. No. 260,979, led March 12, 1928.

Th-e invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therekfrom within the scope of the accompanying claims'.4 and without departing from the principles of the invention, and Without sacrificing its chief advantages.l

What I claim is 1. An inking roller or the like including in combination an inner tubular supporting member, a tubular roller medianly enclosing said supporting member, thrust bearings therebetween, and means acting on the supporting member for longitudinally reciproeating the roller.

2. An inking roller or the like including in combination an inner tubular supporting member, a tubularroller medianly enclosing said supporting member, thrust bearings therebetween, solid pintles fixed to the ends of said supporting member and means engag-` ing one of said pintles to longitudinally reciprocate the roller. Y

3. An inking roller or the like including in combination an inner tubular supporting member, a tubular roller medianly enclosing said supporting member, anti-friction bearings therebetween, and Vmeans engaging the supporting member to longitudinally reciprocate the roller.

Y 4. An .inking roller including in combination a shaft, a tubular roller about the shaftk andl rotatable thereupon, anti-friction thrust bearings supporting the roller` upon the shaft, and means for vibrating the shaft axially with an oscillatory movement.

In testimony whereof, I have signed my name to this specication.

, HANS C. SCHROEDER. 

